rsync 常见故障排查及思路

Posted 2020-09-10

当我们在进行rsync操作时，会遇到各种各样的问题，那么下面就对通过客户端返回的错误信息进行分析：

有很多新手，在客户端进行rsync推拉操作时，不清楚到底有没有出现错误，那么我们可以输入以下命令来进行查看，

 在命令行输入   echo $?    回车后如果显示0，则表示没有出现错误。恭喜你，操作成功。但不幸的是，也会由于操作等其他原因出现各种错误，下面就进入主题：

常见错误：

1、  No route to host (113)

[[email protected] oldboy]# rsync -avz /tmp/ [email protected]::backup --password-file=/etc/rsync.password 

rsync: failed to connect to 192.168.0.204: No route to host (113)

rsync error: error in socket IO (code 10) at clientserver.c(124) [sender=3.0.6]

[[email protected] oldboy]# rsync -avz /tmp/ [email protected]::backup --password-file=/etc/rsync.password 

sending incremental file list

./

yum.log

.ICE-unix/

sent 114 bytes  received 34 bytes  296.00 bytes/sec

total size is 0  speedup is 0.00

[[email protected] oldboy]# echo $?

0

[[email protected] oldboy]# 

错误原因：服务端和客户端iptables开启

解决方法：将服务端和客户端的iptables全部关闭

        /etc/init.d/iptables status     查看防火墙状态

        /etc/init.d/iptables stop       关闭防火墙，该命令最好连续执行两次

2、@ERROR: auth failed on module backup

[[email protected] oldboy]# ll /tmp/

total 4

-rw-------. 1 root root    0 Apr 11 20:31 yum.log

-rw-------. 1 root root 2247 Apr 13 04:29 yum_save_tx-2017-04-13-04-29ETHOfX.yumtx

[[email protected] oldboy]# rsync -avz /tmp/ [email protected]::backup --password-file=/etc/rsync.password 

@ERROR: auth failed on module backup

rsync error: error starting client-server protocol (code 5) at main.c(1503) [sender=3.0.6]

[[email protected] oldboy]# rsync -avz /tmp/ [email protected]::backup --password-file=/etc/rsync.password 

sending incremental file list

./

yum_save_tx-2017-04-13-04-29ETHOfX.yumtx

.ICE-unix/

sent 533 bytes  received 34 bytes  378.00 bytes/sec

total size is 2247  speedup is 3.96

错误原因：模块出现错误

解决方法：进入服务端，查看/etc/rsyncd.conf   查看auth user 和[]内的内容。例如正确答案应该是rsync -avz /tmp/ rsync_backup@192.168.0.204::backup --password-file=/etc/rsync.password 

3、The --password-file option may only be used when accessing an rsync daemon

错误原因：在服务端进行推拉

解决方法：应在客户端操作推拉命令

4、No such file or directory

错误原因：没有此文件或目录

解决方法：根据提示建立相应的文件或目录

5、ERROR: The remote path must start with a module name not a /

 rsync客户端执行rsync命令错误：

   客户端的错误现象：  

   [[email protected] tmp]# rsync -avz /etc/hosts [email protected]::/backup

   ERROR: The remote path must start with a module name not a /

   rsync error: error starting client-server protocol (code 5) at main.c(1503) [sender=3.0.6]

错误原因：rsync命令语法理解错误

解决方法：::/backup是错误的语法，应该为::backup(rsync模块)

6、@ERROR: Unknown module ‘backup‘

[[email protected] tmp]# rsync -avz /etc/hosts [email protected]::backup

@ERROR: Unknown module ‘backup‘

rsync error: error starting client-server protocol (code 5) at main.c(1503) [sender=3.0.6]

 错误原因：模块写错了

  解决方法：1、 /etc/rsyncd.conf配置文件模块名称书写错误

            2、配置文件中网段限制不对

7、 invalid uid rsync

[[email protected] tmp]# rsync -avz /etc/hosts [email protected]::backup

Password:

@ERROR: invalid uid rsync

rsync error: error starting client-server protocol (code 5) at main.c(1503) [sender=3.0.6]

错误原因： rsync服务对应rsync虚拟用户不存在了

解决方法：重新建立虚拟用户useradd rsync -s /sbin/nologin -M

8、rsync服务没有正确启动Connection refused (111)

 [[email protected] ~]#  rsync -avz /etc/hosts [email protected]::backup

rsync: failed to connect to 172.16.1.41: Connection refused (111)

rsync error: error in socket IO (code 10) at clientserver.c(124) [sender=3.0.6]

解决 rsync服务没开启

[[email protected] ~]# rsync --daemon

[[email protected] ~]# ss -lntup |grep rsync

tcp    LISTEN     0      5                     :::873                  :::*      users:(("rsync",1434,5))

tcp    LISTEN     0      5                      *:873                   *:*      users:(("rsync",1434,4))

[[email protected] ~]# rsync -avz /etc/hosts [email protected]::backup

Password:

sending incremental file list

hosts

 sent 196 bytes  received 27 bytes  49.56 bytes/sec

total size is 349  speedup is 1.57

9、--passwd-file=/etc/rsync.passwd: unknown option 没有正确输入password文件名

报错：--passwd-file=/etc/rsync.passwd: unknown option

错误案例  本地rsync.password 文件要保持一致缺少字母都会报错

echo "123456">>/etc/rsync.passwd

[[email protected] ~]# chmod 600 /etc/rsync.passwd

[[email protected] ~]# ll /etc/rsync.passwd

-rw------- 1 root root 7 Mar  9 13:47 /etc/rsync.passwd

[[email protected] ~]# rsync  -az -P /root/ [email protected]::backup --passwd-file=/etc/rsync.passwd

rsync: --passwd-file=/etc/rsync.passwd: unknown option

rsync error: syntax or usage error (code 1) at main.c(1422) [client=3.0.6]

 正确做法：

[[email protected] ~]# echo "123456">>/etc/rsync.password

[[email protected] ~]# chmod 600 /etc/rsync.password

[[email protected] ~]# ll /etc/rsync.password

-rw------- 1 root root 7 Mar  9 13:49 /etc/rsync.password

rsync  -az -P /server/files/secure-20161219  [email protected]::backup --password-file=/etc/rsync.password

sending incremental file list

secure-20161219

    51053780 100%   14.31MB/s    0:00:03 (xfer#1, to-check=0/1)

rsync: mkstemp ".secure-20161219.lcnuWA" (in backup) failed: Permission denied (13)

 

sent 2210982 bytes  received 27 bytes  491335.33 bytes/sec

total size is 51053780  speedup is 23.09

rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1039) [sender=3.0.6]

10、@ERROR: chroot failed 
rsync error: error starting client-server protocol (code 5) at main.c(1522) [receiver=3.0.3] 

原因： 
服务器端的目录不存在或无权限，创建目录并修正权限可解决问题。 

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